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MHT CET202012 Oct 2020Evening ShiftMathematicsTrigonometric Ratios & IdentitiesActual

If A= 5 6 , B= 1 11 , then A+B=

Options

  1. A- 4
  2. B- 3
  3. C3
  4. D4

Correct answer

D. 4

Step-by-step solution

aligned (A+B) &= A+ B 1- A B &= 5 6 + 1 11 1- 5 6 1 11 = 55+6 66 1- 5 66 = ( 61 66 ) ( 61 66 ) (A+B) &=1 A+B= ⁻¹(1) A+B= 4 aligned

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